Electric alarm and recorder for oil-presses



`(No Model.) 2 Sheets-Sheet 1. E.A W. THUMPSON.

ELECTRIC ALARM AND RECORDER ECR CIL PRESSES. No.` 371,640. Patented Oct. 18, 1887.

WITNAESSES (No Model.) 2 sheets-sheen 2.

N0. 371,640. Patented Oct. 18, 1887.

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UNITED STATES PATENT OFFICE.

ERWIN W. THOMPSON, OF CHARLOTTE, NORTH CAROLINA, ASSIGNOR TO THE SOUTHERN COTTON OIL COMPANY, OF CAMDEN, NEW JERSEY.

ELECTRIC ALARM AND RECORDER FOR OIL-PRESSES.

SPECIFICATION forming part of Lettori Patent No. 371.640. dated October 18, 1887.

A pplcatlon filed'April 5, 1886.

To all whom it may concern.-

Be it known that I, EEWIN W. THOMPSON, a citizen of the United States, residing at Charlotte, in the county of Mecklenburg and State of North Carolina, have invented a new and useful Improvement in Electric Alarms and Recorders for Oil-Press Apparat-us, of which the following is a specification.

My invention relates to oil-press apparatus in1 which the operations of pressing are perio 1c.

The objects of my invention are, first, to indicate to the operator of a press regular periods for pressing, thereby attaininga uniform heating of the material before pressing, and, second, to register the operations of the press for inspection at any time. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure l is a side elevation of an ordinary oil-press (the right halfv of the press being in section) with my improvements applied. Fig. 2 shows the details of the connections of the wire with a part of the press. Fig. 3 shows'a plan of the clock. Fig. 4 shows afront elevation with the door and part of the face removed, and Fig. 5 shows a section on line 1 2 of Fig. 4. Fig. 6 shows the recordst-rip, made in a manner hereinafter explained.

Similar letters refer to similar parts in dif ferent views.

The hydraulic cylinder A, with the plunger B, the plates ct a a, columns e e, and -head-tree H, form the principal parts of an ordinary oil-press. When the plunger is down, each plate a is by proper means held a fixed distance from the one above and below it, leaving the equal spaces d d d open to receive the material to be pressed. When the plunger is up, the plates come close together.

At any convenient place on the press, as b, a piece of metal is fastened, well insulated from the press and arranged to make contact with another piece of metal on one of the plates a, as atc, when the plunger is up and to break the contact when the plunger is down.

E and F, Fig. 2, represent nonconducting washers, and b the metallic strip insulated from the press. C is a strip for contact, not insulated. A wire is connected at b with the *made at b c.

Serial No. 197.834. (No model.)

metal strip b, which is insulated Vfrom the press and leads into the clock to the magnetic coils L L L, Figs. 4 and 5, and then out ofthe clock to one of the poles of the batteries P l? l?. These batteries being connected properly, a wire leads from the other terminal pole of said batteries back to the plate C on the press, as indicated, orv to the ground, in such a way as to complete the circuit when the contact is In place of the hour-hand of the clock, the drum D is firmly pressed onto the hour-hand movement at the hub N of the drum. A slip of paper may be secured around the drum D. A lever, Q, carrying thearmatureV, which is located over the magnetic coils L L, carries a pencil-point, p, resting against the paper strip on the drum. When the plunger is up and the circuit is completed by the contact of the strips b C, the magnetsL attract the armature V, while when the plunger is down and the circuit is broken the magnets L release the armature V,and the arm Q,carryingsaid armature, is retracted by the spring S and moved against an adjusting-screw, T, in the clockframe. The movements of the armatureV thus accord with the operations of the plunger, and the operations of the press are thus recorded upon the strip, as shown in Fig. 6. An electric bell, S, is mounted upon some convenient part of the press, and the casing of said clock is made of suitable non-conducting material. A wire leads from one pole of the batteries R R and connects with the clock at z, Fig. 4. The batteries being properly con- 8 nected,a wire also leads from-the other terminal pole thereof to one of the binding-posts of the bell S. A wire leads from the other binding-post of the vibrating bell S to the switch K K. The switch-lever may be turned on either of the strips n o hm, which are connected bywires to corresponding metallic posts, n o h m. From the lower end of these posts and fastened to them are light flexible arms, s tu o, extending out over and very close to the circumferences of the light metallic rings s t o u', which are slipped on the drum. On each arm a slight projection is soldered at a point immediately over its corresponding ring. On the circumference of the r rings any number of projections may be made, as at y y y, Fig` 4, corresponding with the aliquot parts ol" twelve hours. As the clockwork revolves the drum,the projections on the rings are at regular intervals in contact with those on the arms. This contact completes ihe electric circuit for the particular arm that is connected with the strip on which the switchiever K is turned.

The purpose ot having more than one ring is that by having a different number of projections on the different rings the time of the indications for operating the press may be changed by simply moving the switch-lever K without the necessity for taking 01T and putting on a different ring at every change. If none of these rings on the drum have the proper number of projections to make the contacts and thus ring the bell at the desired number ofintervals, then these may be taken ofi' and others pnt on. The movement of these rings corresponds with the motion of the hour-hand movement of the clock, and by means of the projections on the cireumferences completing an electric circuit through wires connecting with the Vibrating bell, as described, the ringing of the bell indicates the iixed periods on which the presses should operate.

Fig. G shows the strip, which may be on the drum,in short pieces to receive twelve hours record, or in rolls on two drums or otherwise with proper mechanism to make a record for a week or more.

Vhat I claim as my invention isl. The combination, with an oil-press carrying a fixed and a movable contact-point and an electric signal, of a clockfmovement having a revolving drum, a magnetic armature Carrying a tracingpoint, placed in operative relation with said drum, an electric generator, and suitable electric connections from the generator to the contactpoints and signal on the press and the armature-magnets, substantially as described.

2. The combination, with an oil-press, an electric bell located thereon, and a circuitcloser also located on said press and operated thereby, and an electric generator, of a clock having one or more revoluble rings mounted upon its movement and provided with projections for closing the circuit, a paper-carrying drum, a recording electro-magnet having its armature in operative position relative to said drum, and suitable electric connections from the generator to the press and armature, substantially as set forth.

ERWIN W. THOMPSON.

VLnesSeS:

XV. A. BARMER, C. R. STERNE. 

